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U.S. Congressional Reports, U.S. Congress
U.S. Gazette
U.S. Mint Circulars, U.S Mint
U.S. Mint Press Releases
U.S. Mint Reports, Government Printing Office
U.S. Mint [Fixed Price List], U.S. Mint
U.S. Office of the Comptroller of Currency's Quarterly Journal
U.S. Secretary of the Treasury Reports
U.S. Treasurer Annual Reports, Government Printing Office
U.S. Treasury and National Bank Note Detector, Laban Heath
U.S. Treasury Press Releases
Underwood's Bank Reporter, B. G. Underwood
Underwood's Counterfeit Detector , B. G. Underwood
Underwood's Counterfeit Reporter, Underwood Reporter Co.
United States and Canadian Commemorative Medals and Tokens
United States Coin Co. Bulletin
United States Commercial and Statistical Register, Samuel Hazard
United States Pattern Coin Handbook and Prices
United States Rare Coin Value Guide [Prices Paid For List], Des Moines Coin & Stamp Publishing Co.
Universal Counterfeit Bank Note Detector at Sight
University of Wisconsin in the Social Studies and History
